How to use Isuzu truck

The Isuzu FVZ fire truck is equipped with a dry powder fire suppression system that provides effective and efficient firefighting capabilities. The dry powder system is an essential component for tackling fires involving flammable liquids and electrical equipment. It works by releasing dry powder, which chemically inhibits the combustion reactions and separates the fuel from the oxygen, thereby extinguishing the fire.

Isuzu FVZ foam fire fighting truck with 6UZ1 diesel engine

The Isuzu FVZ fire truck dry powder system consists of a tank, piping, nozzles, and a discharge controller. The tank is mounted on the truck and is filled with dry powder that can be discharged through a network of pipes and nozzles located throughout the vehicle. The discharge controller regulates the quantity and flow of dry powder being released to ensure effective coverage and extinguisher of the fire.

The dry powder used in the Isuzu fire truck system is typically made up of sodium bicarbonate or ammonium phosphate-based powder. These powders are non-toxic and eco-friendly and are specifically designed to handle Class A, B, and C fires. The dry powder is stored in a sealed tank to prevent moisture contamination, which can render the powder ineffective.

When a fire occurs, the operator of the Isuzu fire truck activates the system by opening a valve that allows the dry powder to flow through the pipes and out of the nozzles at high pressure. The system is designed to deliver a uniform discharge of dry powder over a large area, effectively smothering the fire and preventing it from reigniting.

In conclusion, the Isuzu fire truck dry powder system is an effective firefighting tool that provides quick and reliable fire suppression capabilities. Its ability to handle Class A, B, and C fires, along with its non-toxic and eco-friendly composition, makes it a highly efficient and essential component in firefighting operations

 

Dry Powder System Operation Instruction

1. Filling in Dry Powder operation: Open the filling hole, then you can filling in Dry Powder into the tank directly. Please note that it is strictly prohibited to filling any agglomerate powder into the tank to avoid stocking the pipeline.

2. Nitrogen enter into Dry Powder tank
(1). Open all Head Valve of the Nitrogen tank, Nitrogen inlet the Manifolds.
(2). “Manifolds Pressure Gauge” show the pressure, turn on the High-pressure Shutoff Valve to let Nitrogen inlet Reducing Valve.
(3). Press the “Nitrogen Inlet” button, the Nitrogen enters into the Dry Powder tank.

2. Powder Fire Monitor Operation: when the “Tank Pressure Gauge” shows the standard pressure at 1.4MPa, turn on the Powder Fire Monitor valve, then the Powder Fire Monitor start working.

3. Powder Fire Gun Operation: Press the “Powder Outlet Gun” button, use the powder hose reel to suitable place, turn on the Powder Fire Gun valve, then the Powder Fire Gun start working.

4. Cleaning: Turn on the “Fire Monitor Cleaning Valve” and “Fire Gun Cleaning Valve” respectively, and then you can clean.

Japan isuzu 10 wheeler foam fire fighting truck with 6UZI engine

Notice
1. When Dry Powder Tank Pressure Gauge show the pressure at 0.5MPa, which means the dry powder is nearly using up.

2. When filling the powder tank: Firstly, turn on the Safety-Valve; when discharging all gas in the tank, then open the tank cover.

3. When filling the Nitrogen: Filling Nitrogen into the Manifolds (Please remember: You must turn off the High-pressure Shutoff Valve and turn on Nitrogen tank Head Valve)


Ⅳ. Firefighting Truck Operation Instruction

Introduction：
Valve  1：Fire hydrant water injecting to tank control Valve
Valve  2：Water foam proportioner control Valve
Valve  3：PTO control Valve
Valve  4：65’’ Fire pump water outlet Valve
Valve  5：50’’ Fire pump
Valve  6：Water foam proportioner control Valve
Valve  7：Tank water outlet control Valve
Valve  8：Reel pipeline control valve
Valve  9：Water foam proportioner control Valve

Joint  1：Water inlet Joint
Joint  2：65’’ Fire pump water outlet Joint
Joint  3：50’’ Fire pump water outlet Joint
Joint  4：50’’ Fire pump water outlet Joint
Joint  5：65’’ Fire pump water outlet Joint
Joint  6：Foam pipeline Joint
Joint  7：Fire hydrant water inlet Joint
Joint  8：Fire hydrant water inlet Joint

Operation Steps:
1、    Joint 1 connect with fire hydrant, river, pond, start the engine, control the PTO, turn on vacuum pump, open valve 1, start injecting water into the tank

2、    Only turn on the valve 7, also the control valve (for fire monitor) on the top, start the engine, control the PTO, then the inside water can be sprayed from fire monitor at high speed, adjust the valve 3 which can make the spray faster and stronger.

3、    Turn off joint 6, turn on valve 6 & valve 9, adjust valve 2, in order to adjust the blending ratio of water and foam, then spewed from fire monitor at high speed.(inner foam & water)

4、    Turn on joint 6, connecting the outer foam pipeline, turn on valve 9, turn off valve 6, and then can suction foam from outside into tank.

5、    Turn on joint 6, connecting the outer foam pipeline, turn on valve 9, turn off valve 6                           adjust valve 2, in order to adjust the blending ratio of water and foam, then spewed from fire monitor at high speed.(inner water & outer foam)

6、    Joint 2, 3, 4, 5 can connect with firefighting guns directly.

7、    Joint 7, 8 can have water inject to the tank from fire hydrant.
8、    Turn on valve 8, the equipped reel pipeline can be use.  
1. Fire pump operation instruction
In order to extinguish the fire quickly, it is necessary to operate the fire pump exactly and masterly
1. CB10/60 operation instruction
a．Priming water：
   If using water from tank, we can push the butterfly valve toward to the fire pump shaft direction in order to pull the pin out from pin-hole. Then pull the handle to horizontal position and open the butterfly valve, after that, water will be flowing into the pump.
   If using water from hydrant, we can connect the suction pipe to the hydrant, and then the water will be flowing into the pump from the hydrant
If using water from pond, we need to use a piston primer pump for priming water. In this situation, firstly we can put the suction pipe into the pond; secondly start the low pressure fire pump; thirdly turn the pump rotational speed to 3200r/min in a short time; fourthly pull the control handle down and the piston primer pump begin to work. The water priming will be finished in 40 seconds, then the fire pump begin to work and the piston primer pump stop working automatically, after that ,we can push the control handle up to normal position, if the water priming are not finished in 60 seconds, please check whether there is air leakage in the system.

b．Low pressure work condition
   Open the ball valve which is in the low pressure outlet, and then turn the reflux ball valve to “low pressure” position.


2. Water injection, suction and discharging
1.Two ways of injecting water into the tank：
(1) Water from hydrant
    A. After parking the vehicle according to correct steps, take out fire hose and hydrant wrench.    
B. Connect the outer injection joint to the hydrant with fire hose.
C. Open the hydrant valve with hydrant wrench until the tank has been full.

(2)Water from river and pond
A. After parking the vehicle according to correct steps, take out suction pipe, water-strainer and suction pipe wrench.
B. Connect the suction pipe to the inlet of the fire pump and make sure the length is suitable, then fix the water-strainer on the end of the suction pipe and put it into the river or pond (0.5m under water surface is best).

Notice:
1 Do not bend the suction pipe excessively.
2 Make sure the bending part not higher than the inlet of fire pump.
3 Do not make the water-strainer touch the bottom of pond or river to prevent sundries.
4 Make sure there is not air leakage at all joint, otherwise the water will not be primed
5 Turn off all valves, making the transmission in neutral. Start the engine, push the clutch, press the PTO switch, then release the clutch slowly until the fire pump runs.
6 Press the priming button, adjust the manual throttle simultaneously, making the rotation of pump around 2200r/min-2500r/min, get the vacuum gauge at around 0.5-0.8MPa.
7 After water getting in the pump, make the priming button back reset.
8 While the pressure gauge points at 0.25MPa open the water injection valve, adjust the manual throttle to the necessary pressure until the tank is full.


 2. Water supplied by pump
    Three water supply types:
1.  Supply from tank
2.  Supply from hydrant
3.  Supply from river and pond
(1)Priming operation (Supply from tank):
        Open the pipe valve between tank and fire pump, start fire pump, turn the hand throttle to make the rotational speed to rated speed. When the value of vacuum gauge is from 50Kpa to 80Kpa, open the outlet valve, then turn the hand throttle to proper pressure.
(2) Priming operation (Supply from hydrant):
        a After parking the vehicle according to correct steps, take out fire hose, collecting breeching and hydrant wrench.    
        b Connect the outer injection joint to the hydrant with fire hose and collecting breeching
        c Open the hydrant valve with hydrant wrench, when the water has been primed into the pump, the following steps are same as water supplied by tank situation.
(3) Priming operation (Supply from river and pond):
        The operation steps are the same as water supplied by tank situation a to c.

3. Fire fighting
1). with water
After parking the vehicle according to correct steps, connect the fire hose and hose nozzle correctly, aim to the fire source, operate the clutch and PTO to make the pump start to work. Open vacuum gauge, pressure gauge and cooling system stopcock, check the indication of each gauge, and turn the hand throttle, when the pressure gauge indicates around 0.8Kpa to 1.0Kpa, open the outlet valve, then turn the hand throttle to proper pressure.
Note: Turn off the inlet valve while firefighting.

 2). with foam
 Water foam proportioner:
 Fitted on the fire pump, composed of water pipe system, ball valve, inlet pipe, adjust valve, Y-branch, outlet soft pipe.
Working principle:
When the water with pressure gets into the nozzle through the pressure pipe, cock, then out of the nozzle, negative pressure will be formed inside the proportioner. The foam liquid in the foam tank is sucked into the proportioner through the liquid pipe, ball valve, the calibration hole of the control valve, mixing with the water inside. After the injection pipe, outlet pipe, bending pipe to the pump, the mixing liquid is mixing in pump again and then being pressurized, most of the mixing liquid is sent to the injecting equipment to inject as foam, and small part of it enters the proportioner for running circularly.

Fire fighting with foam:
Two foam liquid supply:
1.    Supply from the foam tank: The foam liquid, sucked by the proportioner from the foam tank, is sent to the air-foam maker through the fire pump, forming the foam.
2.    Supply from the external foam source: the foam liquid is sucked from the foam liquid bucket through the inlet of the air-foam spear, making foam for fighting fire.
(1)    Foam liquid from the foam tank:
a.    Take the water hose and air-foam spear as needed.
Connect one end of the water hose with the fire pump outlet valve, and the other end is connected with the air-foam spear (other spraying equipment)  
b.    Make the handle of air-foam spear at the position for mixing liquid and water.
c.    Start the fire pump for water supply as the instruction.
d.    Turn on the switch of outlet valve.
e.    Open the throttle, adjusting the pump pressure till the standard working pressure of the praying equipment.
f.    Turn down the operation handle of foam liquid on the fire pump, open the foam liquid inlet valve on suction pipe, the air-foam liquid will spray out from the fire monitor (foam spear) or other spraying equipment.
g.    If the foam liquid in foam tank has run out, the foam inlet valve could be turned off. After wrenching the screw of the external liquid inlet, fit the pipette, and get the other end into the foam liquid bucket, the foam could continue praying.
h.    While the fire pump is send the mixing liquid, if the water in tank is not enough, don’t add any water with pressure at the inlet of fire pump.
i.    After fighting fire, the proportioner and the pipe system must be cleaned with water. The proper way is to put the pipette into clean water, start the pump, and turn on the proportioner valve.
(2)    Foam liquid suction:
a.     Take the water hose and air-foam spear as needed.
Connect one end of the water hose with the fire pump outlet valve, and the other end is connected with the air-foam spear (other spraying equipment)  
Make the handle of air-foam spear at the position for mixing liquid and water.
b.     As the instruction for fire pump in water supply, adjust the pump pressure, reaching the indicated outlet pressure of the air-foam spear, then the foam could be sprayed out.
c.     The air-foam spear must be cleaned after firefighting.
NOTES:
In both condition, the foam outlet valve should be turned off, preventing the water backflow to the foam tank (bucket).